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Ofosu-Anim John and Shohei Yamaki

Using the compartmental analysis method, the distribution of sucrose, glucose, and fructose and their efflux from the free space, cytoplasm, and vacuole were determined in Nyoho strawberries (Fragaria ×ananassa Duch.) picked 25 or 35 days after pollination (DAP). At both stages, >70% of total sugar accumulated in the vacuole. Concentration of sugar in the free space increased from 167 mm in fruit at 25 DAP to 217 mm at 35 DAP, whereas that within the cell (cytoplasm + vacuole) increased from 233 to 352 mm. Permeability of the plasma membrane to sucrose, glucose, and fructose was higher than that of the tonoplast and, except for that of fructose, the permeability of the plasma membrane to sugars increased with fruit maturation. ABA at 10-5 m compared to 10-4 m restricted the release of all sugars from fruit discs and was due mainly to reduced efflux across the plasma membrane rather than the tonoplast. Thus ABA may stimulate the accumulation of sugars in fruit flesh by restricting their efflux. Chemical name used: abscisic acid (ABA).

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Changwei Shen, Yifei Ding, Xiqiong Lei, Peng Zhao, Shuo Wang, Yangchun Xu and Caixia Dong

., 2003 ). K activates numerous enzymes, which are critical for various metabolic processes, such as biosynthesis, transport, and transformation of sugar and starch ( Baraldi et al., 1991 ; Karley and White, 2009 ; Lester et al., 2010a ; Niu et al

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Fhatuwani N. Mudau, Ambani R. Mudau, Mpumelelo Nkomo and Wonder Ngezimana

tissue after cutting ( Demirtas et al., 2010 ), defoliation ( Teague and Smit, 1992 ), or seasonal loss of foliage ( Latt et al., 2000 ). The authors further reported that soluble sugar concentrations in roots and stems were being maintained consistently

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Mohsen Hatami, Siamak Kalantari, Forouzandeh Soltani and John C. Beaulieu

starch hydrolysis, as in banana ( Musa acuminata ) or pear ( Pyrus communis ) ( Pratt, 1971 ; Pratt et al., 1977 ). The flavor of fruit and vegetables and their quality depend mainly on the amount of soluble sugars such as glucose, fructose, maltose, and

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Yajun Chen, Jingjin Yu and Bingru Huang

) Soluble sugar content of leaves was measured at 5, 10, and 15 d of drought stress using the spectrophotometric method described by Pei et al. (2010) with modifications. Briefly, 0.2 g fresh leaves were boiled in 10 mL distilled water for 30 min. The

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T. Casey Barickman, Dean A. Kopsell and Carl E. Sams

evaluated for many years in horticultural crops. However, research in recent years focused on using PGRs to improve fruit quality parameters, such as soluble sugars, fruit color, and phytonutrients ( Buran et al., 2012 ; Gonzalez et al., 2012 ; Gu et al

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Yong Zhang, Chunxia Fu, Yujing Yan, Xiaodan Fan, Yan’an Wang and Ming Li

synthesis, carbohydrate metabolism, and cell division ( Hacisalihoglu et al., 2003 ). Apple production has been increasing worldwide but fruit quality is a limiting factor in achieving the economic potential of apple crops. Sugar is an important index for

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Lisa E. Richardson-Calfee, J. Roger Harris and Jody K. Fanelli

fall-transplanted sugar maple and northern red oak ( Quercus rubra L.) began root regeneration earlier and regenerated more roots in the first season after transplant than mid-fall- and spring-transplanted treatments ( Harris et al., 2002 ), whereas

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Lixiang Miao, Yuchao Zhang, Xiaofang Yang, Jinping Xiao, Huiqin Zhang, Ming Jiang, Zuofa Zhang, Yuezhi Wang and Guihua Jiang

Strawberries are widely consumed as fresh, frozen, and processed products, with consumption of fresh strawberries being more prevalent than frozen berries ( Basu et al., 2014 ). In addition to basic nutrition (sugars, organic acids, carotenoids, and

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Zhimin Yang, Lixin Xu, Jingjin Yu, Michelle DaCosta and Bingru Huang

used to measure content of reducing sugars (glucose and fructose) and sucrose, and the residue was obtained for SC analysis. A 1-mL aliquot of supernatant was combined with 1.25 mL ferricyanide reagent and placed in a water bath at 100 °C for 10 min